Half of Rocco the fossil hunter' s fossils are bones. Before he found 9 new bone fossils last week, only $$\(40 \%\)$$ of his fossils were bones. How many fossils does Rocco have?
A.
36
B.
45
C.
48
D.
54
Exam No：2022 First Round Grade 6 Year：2022 Question No：14
Answer:
D
Knowledge points:
G6 - Arithmetic - Ratios & Percentages (Advanced Application)
Solution:
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